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,(No Model.) I L. '0. SMITH.

- v SASH FASTENER. No. 567,620. Patented Sept. 15, 1896.

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ent movement by wh blade applied 3 5 proper movement of the with twopeculiarly shaped slots rear of the & TOIVN E MANUFAC after engagementwith the kee F STAMFO To 0055 whom it may concern: Be it known that I,LESTER C.

The subject of this lnvention is a fastener by the handle, so as to turnit ll I 5 engagement with the customary keep 1 in novel features ofconstruction,to be herelnafter fully described,

out in the claim.

0 All the slots are formed in the hook, which adds to convenience ofmanufacture,

F which slots works upon a stationai the base-plate, and has a cam or anoffset for 0 engagement with the stud to cause t] to move longitudinallyto strain the meeting rails together, a continued mov handle locking thehook, as hereina scribed. The other slot ing-stud which projects dreceives an ownwardly from the handle-plate, adapting the handle to thesw1n ging also terminating 1n a cam or an off. cooperates with the corthe opposite slot to impart the movements to the hook when i each acontrolling-stud, thus simplifying the construction To eifeet the it isprox'ided in front and elongated pin opening,

ement of the 00k, and

longitudinal t is engaged UNITED STATES PATENT OFFICE.

RD, CONNECTICUT, ASSIGNOR T0 TIIE YALE TUBING COMPANY, OF SAME PLACE.

SH-FASTENER.

with the keeper to strain the rails together In order to make the devicein its simple form, with a pairof slotsin the hook and a single pair ofstuds located,respectively, on the base and handle, each slot is madefor a portion of its length concentric with the opposite end of theelongated pivot-hole, and terminates at one end in a cam.

In the accompanying drawings, Figure 1 is a plan view of the fastener inunlocked posi- Fig 2 is a plan view of the same in an intermediateposition whichis assumed duris a perspective view of the base plate.

base-plate, which is selower sash. -7 5 represents the lock1ng-hook,adapted to turn on'the base-plate B. y l H represents theoperating-handle, pivoted to the base-plate y a pin P, which passesthrough. a longitudinal elongated opening S in the hook L.

K represents the keeper, which is secured upon the bottom rail of theupper sash. A spiral spring 8 is preferably interposed between thepivoted head P and the handle H, occupying a socket in the handle andpressing down upon the handle, so as to produce friction between; theparts, but this is not essential to the invention.

The distinctive features of my improve- 0 and the re hook fterdeoperatelongated pin-opening and terminating in a .95

at in looking they first cause swinging movement of the handle and hooktogether, then compel the longitudinal. movement of the hook to strainthe meeting-rails together, andjthen permit an independent swinging ofthe handle into locking: position, and perform said moveimpart ments inreverse order in unlocking; a stud its cam, so that the two movableparts then 5 prlgiecting upward from the base-plate B swing backtogether to unlocked position. wit n the slot 1, and a stud 6 projecting(Shown in Fig. 1.) downward from the handle-plate H into the From theforegoing description it will be slot 2. l observed that theconstruction, while com- The operation of my device is as follows:pletely effective,is very simple and comprises In the unlockingposition, Fig. 1, the handlebut three parts, secured together by apivotal stud 6 is in the offset i, from which it cannot pin, and thatthe controlling relation between escape except by longitudinal movementof the parts is established by the use of only the hook; but thebase-stud 5 is in the portwo slots and a single stud cooperating withtion of groove 1 concentric to the end of the each slot. The offsets areradial to the repin-opening, and will not now permit the said spectivecenters of slots and their studs longitudinal movement. The handle andalternately enter their respective offsets, and hook are thereforecompelled to swing toeach stud while in its slot keeps the other getheron pin P until cam 3 reaches stud 5. stud in its offset, so that thecontrolling re- At that time not only can the hook move lation betweeneach stud and its slot is mainlongitudinally, but upon reaching thepositained until the other stud completes its tion shown in Fig. 2 cam 3substantially armovement in the other slot. There is likerests theswinging movement and the two wise an advantage in having the offsetscams compel longitudinal movement of hook rounded or cam-like, as theyare thereby I. Said longitudinal movement draws the adapted to producethe longitudinal movemeeting-rails together and brings pin P to theopposite end of pin-opening S,after which the handle continues itsmovement independently and causes stud 6 to travel in the concentricportion of slot 2 when the parts are in position shown by Fig. \Vhilethe parts are thus disposed, stud 5 is in offset 3, and by engagementwith the abrupt wall of said offset opposes any attempt to move hook 1until reverse longitudinal movement is imarted to said hook, which canonly be done by first swinging back handle H. until its stud 6 reachescam 4:. In other words, while cam 3 is engaged by fixed stud 5 the hookcannot move except in a direction longitudinal, and stud 6 at the end ofslot 2 prevents said longitudinal movement. "0 release the lock, it issimply necessary to turn back the handle through its independentmovement until stud 6 reaches cam 4-, when said cams cooperate to movethe hook outward to position of Fig. 2, and the stud then standsinengagement with ment of the hook without additional connection.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

A sash-fastener comprising the base and handle with interposed hook andthe pivotal pin said hook formed with enlarged pin-opening and a pair ofslots concentric with the respective ends of the pin-opening andterminating in oppositely-extending cams or offsets; and said base andhandle being provided each with a stud located to work in the slots, toalternately enter their respective offsets and to be each held thereinby the other stud while moving in the concentric portion of its slot,all substantially as and for the purposes Set forth.

LESTER 0. SMITH.

\Vitnesses:

SCHUYLER MERRITT, Gno. E. WHITE.

